Additional file 5.

Bdnf gene structure. This schematic of Mus musculus Bdnf gene structure (top panel, accession number AY057907) indicates the "classical" four
promoters (blue boxes) and coding exon (white box) and the recently described additional
promoters (yellow boxes) [39]. Only the coding exon is translated, giving rise to a protein of 289 amino acids.
The NRSE site and intra-exonic splice sites on promoter II are also indicated. The
bottom panel shows the splice variants arising from the Bdnf gene, including the splice variants arising from intra-exonic splice sites A, B and
C in promoter II.